Disulfide bridges not forming

Hi,

I ran an I-TASSER prediction S140753 and specified a template with 4 contact entries with the location of 4 disulfide bridges as follows:

CONTACT 107 138
CONTACT 121 124
CONTACT 137 149
CONTACT 139 147

However none of the generated predictions contain 4 disulfide bridges. The models returned seem to contain one disulfide bridges at most.

Why hasn't this information been used to improve the prediction?

What are your suggestions?

Thanks